Nauman Zafar | Party Wall Consultant | Survey of Party Wall · Last Updated: September 2026 · Reviewed against the Party Wall etc. Act 1996 and Pyramus & Thisbe Club best practice
Party Wall Act Sections Explained: 1, 2, 3, 6, 7, 8, 10 and 12
The Party Wall etc. Act 1996 has 20 sections, but eight matter to most property owners planning building work. Section 1 covers new boundary walls (1 month notice). Section 2 covers work to existing party walls, the most common trigger (2 months notice). Section 3 gives adjoining owners the right to request additional works by counter-notice. Section 6 governs excavation within 3 to 6 metres of a neighbour’s foundations (1 month notice). Sections 7, 8, 10 and 12 cover compensation, rights of entry, dispute resolution, and security for expenses. This guide explains all eight with notice periods, triggers, and the case law behind them.
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What the Act Does and Why It Exists
The Act exists because building near a shared wall or boundary creates genuine risk to both properties. Without a formal framework, disputes over damage, access, and construction methods would go straight to court. The Act creates an alternative: serve notice, follow the process, appoint surveyors if needed, and settle the terms of construction through a binding award before work starts.
The three key roles
Building Owner: the person carrying out the proposed works. They have the right to carry out the works but must follow the Act’s notice and process requirements.
Adjoining Owner: the owner of any property affected by the proposed works, typically the neighbouring freeholder or long leaseholder. They have the right to be notified, to consent or dissent, and to protection under the award.
Party Wall Surveyor: an independent professional appointed to resolve disputes by making awards. Surveyors have a statutory duty to act impartially regardless of who appoints them, confirmed in Power and Kyson v Shah [2023]. They are adjudicators, not advocates.
The universal process across all sections
- Building owner serves formal written notice on all affected adjoining owners. Notice period depends on the section — 1 or 2 months.
- Adjoining owner has 14 days to respond in writing — consent, dissent, or counter-notice. No response after 14 days means deemed dissent.
- If consent: works can proceed. A schedule of condition is strongly advisable even on consent.
- If dissent or no response: a dispute is treated as having arisen. Section 10 applies, and surveyors are appointed to resolve it by award.
- Surveyors prepare and serve a party wall award setting out permitted works, conditions and protections. Works begin once the award is served.
All Sections at a Glance
| Section | Subject | Notice Required | Period |
|---|---|---|---|
| Section 1 | New wall on the line of junction | Yes | 1 month |
| Section 2 | Works to existing party walls | Yes | 2 months |
| Section 3 | Counter-notice by adjoining owner | Response only | 1 month from receipt |
| Section 6 | Adjacent excavation — 3m and 6m rules | Yes | 1 month |
| Section 7 | Compensation and protection obligations | No notice | Applies throughout |
| Section 8 | Rights of entry | No notice | 14 days reasonable notice |
| Section 10 | Dispute resolution and surveyor appointments | No notice | Triggered by dispute |
| Section 12 | Security for expenses | No notice | Requested before works |
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Ask Us on WhatsApp FreeSection 1 — New Wall on the Line of Junction
The two notice scenarios
Wall built astride the boundary (Section 1(2)): if the wall is to sit on the boundary line itself, sharing ownership, a 1 month notice is served. The adjoining owner can consent and share the cost, consent but decline to pay (the wall is then built entirely on the building owner’s land, with projecting foundations permitted under the neighbour’s land), or dissent, in which case the wall must be built wholly on the building owner’s own land.
Wall built entirely on the building owner’s land (Section 1(6)): where foundations need to project under the neighbour’s land, a 1 month notice is still required. Common with deeper foundations on narrow plots.
- New side wall for a side extension where the boundary currently has only a fence
- New party fence wall replacing an old fence along a shared garden boundary
- New garage or outbuilding wall intended to sit on the boundary line
Section 2 — Works to Existing Party Walls
Section 2(2) lists the specific operations requiring notice:
- Cutting into a party wall — a new opening, a beam pocket, a padstone, a damp-proof course
- Raising or lowering a party wall — common for loft conversions
- Demolishing and rebuilding a party wall — where structurally unsound or requiring major change
- Underpinning a party wall — any work to strengthen or stabilise existing foundations
- Exposing a party wall — where the other side has been enclosed
- Bearing new loads onto a party wall — new floor joists, steel beams or structural members
- Cutting away chimney breasts — removing a projecting breast from a party wall
- Weatherproofing a party wall exposed at the junction with a new adjoining building
A valid Section 2 notice must identify the building owner and every adjoining owner by full legal name, state the address of both properties, describe the proposed works precisely referencing the relevant subsections, and state a proposed start date at least 2 months after service.
Who is the “adjoining owner”? For leasehold properties this is not always the person living next door. It is the freeholder or any leaseholder with a lease of more than 1 year. For flats, the freeholder and the lateral neighbour may both need separate notice. Check Land Registry to confirm all owners before serving.
A schedule of condition is not mandatory under Section 2, but it is the building owner’s primary protection against spurious damage claims. Taylor v Jones [2024] confirmed that damage claims require proof of causation — a thorough pre-works condition record provides the evidence base for that assessment.
Section 3 — Counter-Notice by the Adjoining Owner
When a building owner serves a Section 2 notice, the adjoining owner is not limited to consent or dissent. Section 3 gives a third option: request that the building owner also carry out works that would benefit the adjoining owner’s property while the shared wall is already being worked on — building the wall up to a greater height or thickness than proposed, making good to a higher standard, or other works to the party wall that benefit the adjoining owner.
The building owner has 14 days to consent or dissent to the counter-notice. If they dissent, a dispute arises and Section 10 applies.
Section 6 — Adjacent Excavation: The 3 Metre and 6 Metre Rules
The 3-metre rule — Section 6(1)
Applies where excavation is within 3 metres of the adjoining owner’s structure, goes deeper than the bottom of their foundations, and the purpose is to erect or construct a building or structure.
The 6-metre rule — Section 6(2)
Applies where excavation is within 6 metres of the adjoining structure, and a line drawn at 45 degrees downward from the bottom of the neighbour’s foundation would intersect the proposed excavation. This catches deep foundation construction, basement excavations, piling and diaphragm wall construction where the zone of influence extends beyond the standard 3-metre zone.
A Section 6 notice must additionally include plans and sections showing the excavation site and depth, and the position of any new structure — drawings sufficient for the adjoining owner to understand the relationship between the excavation and their property. This is a mandatory statutory enclosure; a Section 6 notice without drawings is invalid.
Where a Section 6 notice is served, the adjoining owner can request that the building owner underpin or otherwise strengthen their foundations at the building owner’s expense, where reasonably required as a consequence of the excavation.
Section 7 — Compensation and Protection Obligations
Section 7(1) requires works to be carried out with “the least possible inconvenience” to the adjoining owner and occupiers — not a weak obligation, it directly informs award conditions on working hours, vibration limits, noise restrictions and access management.
Section 7(2) requires making good, or compensating for, all damage caused by works under the Act. Taylor v Jones [2024] confirmed this requires proof of causation — the building owner is liable for damage they actually caused, not for every defect present after the works. A thorough schedule of condition is the primary evidence base for this assessment on both sides.
Section 7 extends beyond physical damage to financial loss — lost rental income, trade disruption and other losses directly attributable to the works. Section 7(3) prohibits unnecessarily closing up or blocking any window or light the adjoining owner has the right to use, including temporary obstruction from hoarding, scaffolding or stored materials during works.
Section 8 — Rights of Entry
Section 8(1) grants entry rights to the building owner and anyone they authorise, including the party wall surveyor and appointed contractors, for entering, remaining on and passing over the adjoining land to carry out works under the Act.
Section 8(2) requires at least 14 days’ written notice before exercising the right of entry except in emergencies. In practice, most surveyors arrange access informally and reserve the formal notice for uncooperative situations.
Section 10 — Dispute Resolution and Surveyor Appointments
Agreed surveyor: both owners jointly appoint one surveyor to act for both — faster and cheaper, requiring cooperation from both parties.
Separate surveyors: each owner appoints their own. The two surveyors jointly select a third surveyor at the outset as a tiebreaker, and work independently toward a joint award.
Section 10(4) — appointment on behalf of a non-responding party. Where the adjoining owner fails to appoint a surveyor within 10 days of a written request, the building owner’s surveyor can appoint one on their behalf. This was confirmed as valid in Onigbanjo v Pearson [2008]. The appointed surveyor represents the adjoining owner’s interests fully regardless of how they were appointed — a neighbour cannot block progress by simply not engaging.
The duty of impartiality. Section 10 places a duty of impartiality on every party wall surveyor regardless of who appoints them. Power and Kyson v Shah [2023] reinforced this — a surveyor appointed by the building owner must still act impartially. Party wall surveyors are adjudicators, not advocates for whoever pays their fee.
What goes into a party wall award
| # | Element |
|---|---|
| 1 | Permitted works — exact description of what is authorised |
| 2 | Method statement — how works must be carried out |
| 3 | Schedule of condition — pre-works record incorporated |
| 4 | Working hours — restrictions on noisy operations |
| 5 | Access provisions — surveyor and contractor entry rights |
| 6 | Damage procedure — how damage is reported and remedied |
| 7 | Third surveyor — named tiebreaker identified at outset |
| 8 | Fees and costs — who pays surveyors and at what rate |
| 9 | Monitoring — crack monitors, movement records where required |
| 10 | Security for expenses — escrow amount if Section 12 applies |
Appealing an award. Either party has 14 days from service to appeal to the County Court under Section 10(17). The window runs from service, not from when the award is read — Knight v Goulandris [2018] EWCA Civ 237 confirmed email service starts that clock immediately. Read every award on the day it is received and get professional advice immediately if anything is unclear.
Section 12 — Security for Expenses
Section 12 security is not automatic — it must be requested and justified by the nature of the proposed works. Projects most likely to generate a request include basement excavations near the adjoining foundation, underpinning to a shared party wall, deep piling with vibration risk, and any project where the structural engineer’s calculations show material proximity to the adjoining foundation zone.
The agreed sum is held in a joint account or with a stakeholder, typically a solicitor. If damage occurs and the building owner fails to make good within the agreed timescale, the adjoining owner can draw on the security without pursuing court action. The money returns to the building owner once works conclude with no damage, or once all claims are resolved.
A Section 12 request is not a sign of bad faith — it is a legitimate statutory right. Contesting a reasonable security request typically delays the award and the project start more than simply agreeing a proportionate amount.
Pre-Work Checklists
Building Owner — Before You Serve Notice
- Identify all adjoining owners by full legal name via Land Registry — freeholders, leaseholders over 1 year, and all affected neighbours
- Confirm which sections apply — 1, 2, and/or 6 — and prepare separate notices for each
- Prepare accurate drawings showing the relationship between the proposed works and the boundary or party wall
- Draft the notice with precise work descriptions referencing the relevant subsections of the Act
- State a proposed start date at least 1 month (Sections 1, 6) or 2 months (Section 2) after service
- Serve by recorded delivery and retain the posting receipt as proof of service date
- Wait 14 days for written responses — do not start works during the notice period
- Commission a schedule of condition regardless of whether the neighbour consents or dissents
- Appoint a party wall surveyor before the notice period expires if dissent is likely
Adjoining Owner — On Receiving a Notice
- Read the notice carefully — check the building owner’s name, your name, both addresses, the works description and proposed start date
- Check whether the works are correctly described and the notice period is compliant
- Consider whether a Section 3 counter-notice would be advantageous — you have 1 month from receipt
- Do not ignore the notice — no response after 14 days is treated as dissent
- If consenting, request a schedule of condition — it protects you regardless of whether damage occurs
- If dissenting, appoint a qualified surveyor promptly — reasonable fees are paid by the building owner under Section 10(13)
- Consider whether Section 12 security for expenses is appropriate given the works
- Grant access for the pre-works condition survey — refusing access weakens your position on any future claim
Explore the full toolkit: cost calculators, notice checkers, and timeline estimators for every project type.
If You Are the Adjoining Owner
- Your surveyor costs you nothing — the building owner pays all reasonable fees under Section 10(13), including your independent surveyor
- You can request extra works via a Section 3 counter-notice if it makes sense to do them while the wall is already being worked on
- You can request Section 12 security for expenses on higher-risk projects like basements and underpinning
- Consenting does not waive your rights — Onigbanjo v Pearson confirmed you can still invoke the surveyor process later if a specific dispute arises
- You have 14 days to appeal an award to the County Court under Section 10(17) once served
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Ask Us on WhatsApp FreeCase Law Applied
Power and Kyson v Shah
[2023] EWCA Civ 239 — Court of AppealNo valid notice means no Act procedure. The dispute and award process cannot be triggered retrospectively. Surveyor duty of impartiality confirmed even for party-appointed surveyors.
Taylor v Jones
[2024] EWCA Civ 170 — Court of AppealDamage liability under Section 7 requires proof of causation. The schedule of condition is the primary evidence base for establishing what the works actually caused.
Onigbanjo v Pearson
[2008] BLR 507 — County CourtSection 10(4) appointment on behalf of a non-responding adjoining owner confirmed as valid. Consenting to a notice does not waive the right to invoke the surveyor process if a specific dispute later arises.
Louis v Sadiq
[1997] 1 EGLR 136 — Court of AppealWhere notifiable works are carried out without the party wall process being properly engaged, those works are unlawful and the building owner remains liable to the adjoining owner at common law, in nuisance, for any resulting loss or damage. A later award has no retrospective curative effect — it cannot excuse liability for damage caused before the Act was properly invoked. This reinforces the same principle later confirmed in Power v Shah, from an older and equally firm angle.
Gyle-Thompson v Wall Street Properties Ltd
[1974] 1 WLR 123 — Chancery DivisionParty wall surveyors act in a quasi-judicial capacity when making an award. An award made by properly appointed surveyors acting within their jurisdiction is a final determination — the courts will not substitute their own technical judgment for the surveyors’ professional assessment.
Key Takeaways
- Eight sections matter for most residential projects: 1, 2, 3 and 6 govern notices; 7, 8, 10 and 12 govern rights, duties and disputes
- Section 2 is the most commonly triggered section — it covers cutting, raising, underpinning and loading an existing party wall
- Section 3 counter-notices are a genuine, often overlooked right allowing adjoining owners to request concurrent works at their own cost
- Louis v Sadiq [1997] confirms that unauthorised works remain liable at common law, and a later award cannot retrospectively excuse damage caused beforehand
- A party wall award has ten standard elements — from permitted works and method statement through to fees, monitoring and security for expenses
- Consenting to a notice does not waive an adjoining owner’s rights — Onigbanjo v Pearson confirmed the surveyor process remains available if a dispute later arises
Frequently Asked Questions
A typical rear extension can trigger multiple sections. Section 2 applies if cutting into or bearing loads on an existing party wall. Section 6 applies if foundation excavation is within 3 metres of the neighbour’s foundations and goes deeper. Section 1 applies if building a new wall on the boundary line. All three can apply to the same project, each requiring a separate notice.
Section 1 applies to brand new walls on the line of junction where no wall currently exists, with a 1 month notice period. Section 2 applies to existing party walls — cutting, raising, underpinning, or bearing new loads — with a 2 month notice period. Both can apply to the same project.
A counter-notice allows the adjoining owner to request additional works carried out at the same time as the building owner’s proposed works, where those additional works benefit the adjoining owner. It must be served within 1 month of receiving the original notice, and the adjoining owner pays for anything that benefits only them.
The 3-metre rule requires notice where excavation is within 3 metres of a neighbouring structure and goes deeper than its foundations. The 6-metre rule applies where excavation is within 6 metres and a 45-degree line from the base of the neighbour’s foundation intersects the proposed dig. Both require 1 month notice.
Section 7 requires the least possible inconvenience to the adjoining owner, making good all damage caused, and compensating for loss or inconvenience. It also prohibits unnecessarily closing up lights the adjoining owner is entitled to use. Taylor v Jones [2024] confirmed damage liability requires proof of causation, assessed against the pre-works schedule of condition.
Section 10(4) allows the building owner’s surveyor to appoint a surveyor on behalf of the adjoining owner where they fail to appoint their own within 10 days of a written request. This prevents a neighbour from blocking a project by not engaging. Confirmed valid in Onigbanjo v Pearson [2008].
Section 12 allows the adjoining owner to request the building owner deposit money in escrow before works begin, as security against potential damage. The amount is set by the surveyor(s) based on risk, and held until works complete and all claims are resolved. Most common on basement, underpinning and piling projects.
Starting notifiable works without a valid notice is a breach of the Act. Under Power and Kyson v Shah [2023], the dispute and award procedure cannot be triggered retrospectively. Under Louis v Sadiq [1997], the neighbour can pursue a common law nuisance claim, and a later award does not excuse liability for damage caused before the Act was properly engaged.
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